This “Model 31 & 32 Car Retarder exhibit in Sale Promotion Center”. would make an interesting paper- weight – providing your desk was big enough to support it! 🙂 I wonder if its still around somewhere?
There’s also outside photos, showing various car retarders being installed and tested in the US&S yard – this one caught my eye because it also shows a whole row of relay cases, and even a classic Ford pickup truck. Enjoy!